Laser Irradiation and Property Correlation in Double-Lasing Processes on Laser-Induced Graphene Electrodes
Year: 2025
Type: article
Abstract: The fabrication of laser-induced graphene (LIG) electrodes by direct laser writing techniques has received considerable attention due to its simplicity, versatility, and cost-effectiveness for electrochemical applications in both sensing and energy storage. In general, a single-lasing irradiation process is used to prepare LIG electrodes. However, the intrinsic features of LIG can be further improved by taking advantage of additional lasing processes, even without any chemical treatments. In this work, we investigated the potential enhancement of LIG’s electrochemical performance through a double-lasing irradiation process. This process does not require any chemical modification of the LIG to improve its electrochemical performance. Importantly, we revealed the correlation between laser irradiation and the properties of LIG electrodes prepared through the lasing process. We evaluated the characteristics of LIG electrodes prepared by the single-lasing and double-lasing irradiation regarding their microstructures and electrochemical features, including the sheet resistance (RS), specific areal capacitance (CA), peak-to-peak separation (ΔEP), and peak current. The double-lasing LIG exhibited improved electrochemical properties, especially low RS and ΔEP values. This improvement results from a higher degree of graphitization, making them advantageous for developing electrochemical sensors. This was demonstrated by the improved electrochemical sensing of H2O2 using the double-lasing LIG.
Source: Nanomaterials
DOI: 10.3390/nano15050333
Authors: Tran Quoc Thang, Joohoon Kim
Institution: Kyung Hee University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,896
OpenAlex ID: W4407846007